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What happens to the initially stationary yo-yo in Fig. 11-25 if you pull it via its string with (a) force
Figure 11-25 Question 3.
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Fundamentals of Physics, Volume 1, Chapter 1-20
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- Figure 12-29 Problem 11. •12 In Fig. 12-30, trying to get his car out of mud, a man ties one end of a rope around the front bumper and the other end tightly around a utility pole 18 m away. He then pushes sideways on the rope at its midpoint with a force of 550 N, displacing the center of the rope o.30 m, but the car barely moves. What is the magnitude of the force on the car from the rope? (The rope stretches somewhat.) Farrow_forwardFigure 12-35 Problem 18. •19 To crack a certain nut in a nutcracker, forces with magnitudes of at least 40 N must act on its shell from both sides. For the nutcracker of Fig. 12-36, with distances L = 12 cm and d = 2.6 cm, what are the force components F (perpendicular to the handles) corresponding to that. 27 40 54 N? 386 F L- 413 444 -d- 479 514 549 583 F 609 346 / 1368arrow_forwardThe force P is applied to the 200-kg block A which rests atop the 100-kg crate. The system is at rest when P is first applied. Determine what happens to each body if (a) P = 600 N, (b) P = 800 N, and (c) P = 1200 N. H, = 0.5, Hj = 0.3 200 kg B 100 kg H, = 0.25, µ̟ = 0.15arrow_forward
- 2) A student’s head is bent over her physics book. The head weighs P = 24.6 N and is supported by the muscle force F→mF→m exerted by the neck extensor muscles and by the contact force F→cF→c exerted at the atlantooccipital joint. Given that the magnitude of F→mF→m is 60.0 N and is directed 35.0° below the horizontal. a.) Find the magnitude of the contact force F→cF→c . b.)Find the direction of the contact force Fc−→Fc→ . If the direction is below the horizontal, enter a negative value.arrow_forwardA man holds a 183-N ball in his hand, with the forearm horizontal (see the figure). He can support the ball in this position because of the flexor muscle force M→, which is applied perpendicular to the forearm. The forearm weighs 24.5 N and has a center of gravity as indicated. Find (a) the magnitude of M→ and the (b) magnitude and (c) direction (as a positive angle counterclockwise from horizontal) of the force applied by the upper arm bone to the forearm at the elbow joint.arrow_forwardAn object is said to be in static equilibrium if the sum of the forces acting on an object is zero. The weight described below is in static equilibrium. A 63-lb weight is suspended by three cables that are anchored at points P (-5, 1,0), Q (-2, -4,0), and R(21/5, 9/5, 0). The weight is located at S(0,0, –63/11);. Let F1, F2, and F3 be the forces of tension resulting from the load in cables SP, SQ, and SR, respectively. Note that because the weight counterbalances the the load in the three cables F1 + F2 + F3 + (0, 0, –63) = (0,0,0), where F1 = a SP, F2 = b and F3 = c SR for some unknown scalars a, b, and c. First solve for the unknowns a, b, and c and use them to find the force vectors F1, F2, and R а, Feel free to use a computational solver like WolframAlpha.com to solve these equations. F1 = F2 = F3 = help (vectors)arrow_forward
- PROBLEM 02 Find the angle between two vector forces whose magnitudes are F and 3F and the magnitude of whose resultant 19 3F. PROBLEM 03 A force T passing through points A and B as shown, has a counterclockwise moment of 400 KN-m about point O. If the coordinates of points A and B are (0,6) and (8,0) in meters, compute the value of force T. PROBLEM 04 The resultant of the concurrent forces shown 15 1OOKN with O, of 60° directed DR. Determine the unknown force. Figure, PROBLEM 05. Refer to problem SP203. Q = 10 KN %3D Change P=25 KN up to the left at 30 degrees w/ x-axis, Q=30 KN, W=35 KN, T=18 KN directed to the right. F = ? 3| 4 P = 30 KN T = 20 KNarrow_forwardA man holds a 192-N ball in his hand, with the forearm horizontal (see the figure). He can support the ball in this position because of the flexor muscle force M→, which is applied perpendicular to the forearm. The forearm weighs 24.2 N and has a center of gravity as indicated. Find (a) the magnitude of M→ and the (b) magnitude and (c) direction (as a positive angle counterclockwise from horizontal) of the force applied by the upper arm bone to the forearm at the elbow joint. Please show how the angle in c was foundarrow_forwardA 10 N ball is supported by an incline and a cable making an angle a with the vertical direction. Knowing the force in the cable equal to 5 N, determine the angle a and the force exerted by the ball on the incline. Consider the ball as a particle.arrow_forward
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